A WebAssembly exception object. More...

#include <exn.hh>

Public Member Functions
	Exn (wasmtime_exn_t *raw)
	Takes ownership of a raw `wasmtime_exn_t` pointer.

	Exn (Exn &&other)=default
	Constructs a new exception.

Exn &	operator= (Exn &&other)=default
	Moves an exception.

	Exn (const Exn &)=delete

Exn &	operator= (const Exn &)=delete

	~Exn ()=default
	Destroys an exception.

Result< Tag >	tag (Store::Context cx) const
	Returns the tag associated with this exception.

size_t	field_count (Store::Context cx) const
	Returns the number of fields in this exception.

Result< Val >	field (Store::Context cx, size_t index) const
	Reads a field value by index.

wasmtime_exn_t *	capi () const
	Returns the raw underlying C API pointer (non-owning).

wasmtime_exn_t *	release ()
	Releases ownership of the underlying C API pointer.

Static Public Member Functions
static Result< Exn >	create (Store::Context cx, const Tag &tag, const std::vector< Val > &fields)
	Create a new exception object. More...

Detailed Description

A WebAssembly exception object.

Exception objects carry a tag and a set of field values. They are allocated on the GC heap within a store.

This type owns its underlying wasmtime_exn_t handle. When it goes out of scope the handle is freed.

Member Function Documentation

static Result< Exn > wasmtime::Exn::create	(	Store::Context	cx,
		const Tag &	tag,
		const std::vector< Val > &	fields
	)

inlinestatic

Create a new exception object.

Parameters

cx	the store in which to allocate the exception
tag	the tag to associate with this exception
fields	the field values matching the tag's payload signature

The documentation for this class was generated from the following file: